Standalone Alternating Current (AC) Batteries and Cockcroft-Walton Multiplier
The technology owner had developed a patented standalone AC battery with a proprietary electrode design that has both the characteristics of anode and cathode. This enables the battery to generate AC power (square / pulsed wave form) from a single battery and a single switch. In a typical direct current (DC) to AC power conversion configuration used for brushless DC motors (BLDC) in drones and electric vehicles – multiple DC batteries, switches, complex battery management system and inverter circuit are needed to generate 3-phase AC to power a BLDC. The novel AC battery uses a simpler circuit design that minimises battery management system, converters and inverters.
The use of the third electrode enables the voltage within the battery cells to be divided by half, e.g. while there is 4V between anode and cathode within the conventional Li-ion battery, the electrode can divide the voltage into 2V each, leading to safer operations and longer cycle life. The technology owner is looking at integrating the Cockcroft-Walton Multiplier (CWM), an established circuit that generates high DC voltage from an AC input as part of the AC battery system. The technology owner aims to boost the voltage, e.g. from 1.85V to 20V for industrial drones with an additional cost of USD200, while achieving 30% higher battery capacity with the AC battery and CWM combination.
The technology owner had already developed several prototypes including a 100mA pouch cell. They are currently working on optimising the thickness of the electrode and preparing for a pilot test in industrial drones. The technology owner is seeking technical collaboration to scale up the AC battery prototype, develop integrated AC battery with CWM, conduct pilot test in drones, e-bikes, or e-wheelchair and eventually to license their technology to battery or battery parts manufacturers.